Photographic camera.



H. J. GAISMAN.

PHOTOGRAPHIC CAMERA.

APPLICATION FILED APR. 3. 1914.

Patented May 30,1916.

3 SHEETSSHEET I.

[if all FD Mk (I H. J. GAISMAN.

PHOTOGRAPHIC CAMERA.

APPLICATION FILED APR. 3. 1914- 1,1 84,941. Patented May 30, 1916.

3 SHEETSSHEET 2.

..-----.-a-.--upn..n-unn I H. J. GAISMAN.

PHOTOGRAPHIC CAMERA.

APPLICATION FILED APR. 3, 1914.

1,1 84,94 1 Patented May 30, 1916.

' 3 SHEETSSHEET 3.

UNITED STATES PATENT OFFICE.

HENRY J. GAISMAN, 01' NEW YOBK,'N. Y., ASSIGNOBHI'O EASTMAN KOEAKCOMPANY OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

rno'roommc causes. 7

Specification of Letters .Patent.

Patented May 30, 1916;

I, Application filed April 3, 1914. Serial No. 829,207.

panying drawings, forming a part of this specification, and to thereference-numerals marked thereon.

My present invention relates to photography and more particularly tophotoraphic cameras of a kind in which an opening is provided in thecovering wall next adjacent to the sensitized surface or its supportwhereby indicia may be applied to the sensitizedsurface either bywriting or by light exposure or similar means for the purpose ofidentifying various exposures.

The invention contemplates an improvement in roll holders and cameras ofthe geni eral type mentioned, wherein the indicia are applied throughthe medium of a flexible sheet covering the sensitized surface and uponwhich covering sheet the writing is done and transmitted,photographically,

through to the sensitized surface and it has for its object to providesuch acamera with means whereby a stable writing surface is created andthe sheet and sensitized surface are held firmly in register for thepurpose of preventing the outline communicated to the sensitized surfacefrom becoming blurred as aresult of one element creeping upon the otherwhile bein inscribed, or subsequently.

A further ob ect of the invention is to provide an arrangement wherebythose ortions of the sensitized surface surrounding the limited areathat receives the marking and is exposed through the opening, may bemasked off against possible exposure to actinic rays.

To these and other ends the invention consists of certain improvementsand combinationsof parts all as will be hereinafter more fullydescribed, the novel features being pointed out in the claimsspecification.

In the drawings: Figure 1 is .a fragmentary rear elevation of a cameraconstructed in accordance with and illustrating one embodiment of myinvention, the view show-' at the end of the ing in plan the cover forthe opening in the back 0 the camera-in closed position; Fig.

2 is an enlarged detail fragmentary view of the pmtle arrangements ofthe cover, the latter bemg in open position; Fig. 3 is a longitudinalcentral section through the camera taken substantially on the line 33 ofFig. 1; Fig. 4 is a rear elevation of the camera back correspondingsomewhat to Fig. 1 but showing the cover in open posi- Similar referencenumerals in the several I figures indicate the-same parts.

My improvements are particularly adapted to roll holding or film camerasand such a camera of a well-known general design is illustrated in thedrawings as comprising a body 1 having film winding and film feedchambers 2 and 3, respectively, at opposite ends thereof together withan intermediate bellows chamber 4, at the rear of which is the frame 5defining the exposure opening 6 of the camera at the rear. The filmsupporting and feeding mechanism may be substantially the same as usual,the film strip 7 being wound onto the spool 8 from the spool 9 afterpassing over rollers 10 and the frame 5 past the exposure opening 6. Therear wall of the camera is constituted by a displaceable or separatelyremovable'back 11 spanning and coverin that portion of the film stripwhich is in t e focal plane.

a In one construction of camera of the gen eral type here concerned, thefilm strip 7 that passes next adjacent to exposure opening frame5 isprepared with a co-extensive and superposed strip of carbon paper 12(Fig. 6) upon which in turn is superposed a protective strip of paper orother suitable material 13 that is next adjacent to the back 11. Thelatter has an opening 14 therein opposite one side of the frame 5 sothat by mean'sof a stylus or other-.suitable implementinserted throughthisopening a writing or tracing may be made on the outer superposedstrip at the margin of each exposure, the said strips being supportedagainst the frame 5 during this operation. The carbon coating isdisplaced by the stylus along the outline traveled and witha subsequentexposure to thelight admitted through the opening 14 a negativereproduction of the outline is 'photographically transmitted through toand recorded upon the sensitized surface. In explanation of thisprocess, it may be said that the protecting paper backing 13 and thecarbon strip 12 taken together 'are suflicient to protect the sensitizedsurface from bein exposed when light'of ordinary intensity is admittedfor a brief space of time, but the outer stri 13 is of such a naturethat when the opacity of the carbon strip 12 beneath it isimpaired,sufiicient light will be transmitted to effect the sensitized materialdirectly beneath.

In the practice of the present invention, I clamp down smoothly andsecurely that limited area of the sensitized material and its superposedcoverings which is opposite the opening 14 through the operation of aclamping device which holds the three plies of material, 13, 12 and 7that are within the boundaries of such area, and upon which the writingor marking is done, tightly pressed together against the relativemovement that would ordinarily be provoked by the pressure and travel ofthe stylus. Thus a smooth, flat and immobile writing surface is createdwith the several contacting surfaces so held beneath the stylus that thetrace of the latter upon one remains in perfect register with that uponthe other and a clear cut print of the legend produced is inevitable. Tothese ends, I arrange in or at least opposite to the opening 14 a frame15 having a limited movement into and out of contact with the strips 13,12 and 7 and provided with a central aperture .16 through which themarking is .done and the li ht transmitted, said frame being also preerably provided with a flanged collar 17 closely fitting the opening 14.The frame may be formedas part of a resilient plate 18 (Fig. 5) securedto the back 11 at a far point 19 from the. frame 15 to allow the latterthe limited movement aforesaid.

The openings 14 and 15 are normally closed by a door 20 hinged at 21 ona pintle having a spring 22 that seeks to raise-the door .to the openposition of Fig. 8. The door is held closed by a sliding latch 23 guidedin the cover plate 24 and having an ofi'set engaging portion 25 thatcooperates with the said cover as shown in Fig. 6 to to raise. When thelatch is so withdrawn,

a cam-face pin 26 on'the frame-carrying resilient plate'18, which pinnormally occupies a registering opening 27 in the. latch, is depressedand by deflecting the plate 18, carries the frame 15 from a retractedposition close against the back 6 to an extended position in which itbears upon the strips 13, 12 and 7 and holds them closely compressedagainst the frame 5. This not only flattens the writing surface asdescribed above, but with a firm light-excluding pressure along themargins of the area that is to receive the indicia, vit entirely andeffectively prevents the light from being communicated beyond that areaand the picture-receiving portions of the film can therefore notpossibly be damaged as a result of normally held out of contact with thestrips so that it cannot possibly interfere with or injure them duringtheir usual manipulation. but said frame is at the same time instantlyand automatically rendered effec- "tive when the cover 20 is released oropened for any purpose whatever. 1

It 1s obvious that the present improvement may be utilized in connectionwith any method of marking the sensitized surface in the general manneroutlined, that is, through an opening in the covering wall and theinvention as herein described in a particular embodiment in whichassociation 'is shown with a roll-holding or film camera is applicableto film holders generally whether separate from a camera or built in asapart of the general construction thereof.

While I have referred to the strip 12 as of carbon paper, it will beunderstood that my invention contemplates the use for the same purpose,of any other suitable strip having a suitable displacement ortransferable surface or character whereby, after writin or marking uponor against the same, ight may passthrough the marked or written againstortions of the strip to -photographically a eat the sensitized elementcorrespondingly. It will be understood that while I have illustrated aprotecting strip 13 over the strip 12, yet the strip 13 may be dispensedwith when the strip 12 is of itself sufiiciently opaque to stop light;passing therethrough until portions thereof or of its displaceablesurface have been displaced or rendered less opaque by reason of themarking thereagamst. i

I preferin practice that the carbon coating on the strip 12 be arrangedon the outer side or next to the strip 13, in order to preventcarbonparticles from being pressed derstood that this specific arrangement isnot necessary to the practice of my invention.

I claim as my invention:

1. In a photographic camera adapted to hold' sensitlze'd material, and aflexible protective sheet superposed thereon the combination with acoverin wall provided with an'opening through w ich a limited area ofthe. sensit zed material is made, accessible from the exterior of thecamera for the application of indiciatransmitted through the coveringsheet, or a frame arranged to surround the said limited area of thesensitized material and adapted to clamp the latter and the coveringsheet together in intimate -contact along the margins of the area. a

2. In a photographic camera adapted to hold sensitized material, and afiexible.protective sheet superposed thereon the combination with acovering wall provided with an opening through which a. limited area ofthe sensitized material is made accessiblefrom the exterior of thecamera for the application of indicia transmitted through the coveringsheet, of a member on the covering wall arranged to engage with theprotective sheet and to clamp the latter in intimate contact with thesensitized material along the margins ofthe said limited area thereof,

and a rigid support beneath the sensitized surface.

3. In a photographic camera, the combination with a support for thesensitized material and a displaceable camera back cohstituting acovering walllfor the latter and provided with an opening through whicha limited area of the sensitized material is made accessible from theexterior of the camera for the application of indicia, of a material toact as means for clamping it .vided withan opening through a limited.

the application of indicia, of a member on 'member on the back normallyheld in a retracted position in which it is withdrawn away fromsensitized material on the sup-' port but adapted to-be extended fromthe back to an operative position toward such against its support.

4. In a photographic camera, the combination with a support for thesensitized material and a coveringwall for the latter proarea of thesensitized material is made accessible from the exterior of the camerafor the covering wall normally held in a retracted position in which itis withdrawn away from-sensitized material on the support but adapted to,be' extended from the back to .an operative position toward'suchmaterial to 'act ,as a means for clamping it against its support, meansfor sealing the opening in the covering wall and means un-' der thecontrol of said last mentioned means for automatically actuating theclamping device to an operative position When the sealing means is ininoperative position.

5. In a photographic camera, the combi nation with a support for thesensitized material and a covering wall for the latter rovided with anopening through which a im ited area of the sensitized material is madeaccessible from the exterior of the camera for the application ofindicia, of a member on the covering wall normally held in a retractedposition in which it is withdrawn away from sensitized material on thesupport but adapted to be extended from the back to an operativeposition toward such material to act as a means for clamping it againstits support, means for sealing the opening in the covering wallcomprising a closure and a latch for holding it in closed position andmeans for automatically actuating the clamping device to an operativeposition when the latch is withdrawn from the closure. .1 I

' 6. A holder for film embodying a casing having an aperture therein, aclamping member surrounding the aperture and movable toward the film, acover for the aperture and connections'between said cover and the memherfor moving the latter toward the film when the cover is removed.

7. A holder for film embodying a casing having an aperture, a filmsupport beneath the aperture, a clamping member surrounding the apertureand movable toward and from the film and support, a covei for saidaperture and connections for operating the member to engage the filmwhen the cover is removed.

8. A holder forfilm embodying th cas-' ing having an. aperture, a filmsupport beneath the aperture, a clamping frame surrounding the apertureand automatically movable away from the film, a cover for the aperture,means for securing the cover and connections between the cover securingmeans and the frame for moving the latter toward the film when the coversecuring means is released.

9. A holder for film, embodying a casin having an aperture, a framesurrounding the aperture-and a spring for operating it nation with asupport for the sensitized material and a covering wall thereforprovided with an opening through which a limited area of the sensitizedmaterial ismade accessible from the exterior of the camera for theapplication of indicia, of means mounted on said covering wall andmovable at the will of the-operator toward and from the sensitizedmaterial for masking ofl" portions of the sensitized material adjacentto said limited area from exposure to actinic light admitted through theopening.

11. In a photographic camera, the combination with a support for thesensitized material and a covering wall therefor provided with an openinthrough which a limited area of the sensitized material is madeaccessible from the exteriorof the camera for the applicationof indicia,of means-arranged to exert light excluding pressure continuously alongthe margin of said area to mask off portions of the sensitized materialadj acent to said limited area from exposureto actinic light admittedthrough the opening and means operable from the exterior of the holderfor applying and removing pressure at will.

12. A holder for photographic film embodying a casing having an aperturetherein, a rigid support beneath the aperture, a removable cover for theaperture and means for clamping the film to prevent movement thereofwhen the cover is removed.

13. A holder for photographic film embodying a casing having an aperturetherein, a rigid support beneath the aperture, a spring arm secured tothe casing and adapted at its free end to engage and clamp the 'filmanda movable slide on the casing cooperating with the arm to cause it toclamp the film.

the aperture, andin, a movable frame located in the a erture,

and a cover for the aperture pivote to the casing and recessed in itsinner side to receive the frame when in position over the aperture.

17; A holder for photographic film embodying a casing having anaperture, a spring arm secured at one end to the casing, a frameextending through the aperture and secured to the free end of thearm,and a cover for closing the aperture and recessed at theinner sideto receive the frame when the cover is closed;

. Signed at New York city, in the county of New York, and State of NewYork, this 2nd day of April, A. D. 1914.

1 HENRY J. GAISMAN.

Witnesses:

T. F. BOURNE, MARIE F. WAINWRIGHT.

